Machine for making paper pipes



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(No Model.)

J PETERS. MACHINE FOR MAKING PAPERPIPES.

No. 465,414. Patented'Deo. 15, 1891.

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4 11 5mm. MACHINE FOR MAKING PAPER PIPES.

Patented Dec. 15, 1891.

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v J.PETERS@. MAGHINE FOR MAKING PAPER PIPES No. 465,414. Patent-ed'Deo'.15 1891.

WITNESSES. TZM

- INVENTOR.

UNITED STATES- PATENT OF I E.

JAMES PETERS, OF LATROBE, ASSIGNOR OF ONE-HALF TO WARD METZGER, OFPITTSBURG, PENNSYLVANIA.

MACHINE FOR MAKING PAPER PIPES.

SPECIFICATION forming part of Letters Patent No. 465,414, dated December15, 1 891. Application filed March 9,1891; $erial No. 384,203. (Nomodel.)

To all whom it may concern:

'Be it known that I, J AMES PETERS, of Latrobe, in the county of\Vestmorelandand State of Pennsylvania, have invented a new r 1, showingthe pipe-making plunger at the Fig. at is a detail view.

end of its stroke.

and useful Improvement in Machines for Making Paper Pipes, of which thefollowing is a full, clear, and exact description.

The object of my invention is to provide means for making pipes frompaper-pulp. Such pipes are intended for use as non-heatcon'ductingcoverings for steam-conducting pipes and for other purposes. They aremade frompaper-pulp stock, which, being compressed so as to compact itand to expel the moisture, makes a very substantial pipe.

I shall now describe my improvement with reference to the accompanyingdrawings, in which Figure 1 is a side elevation ofmy improved machine.Fig. 2 is a detail view showing the clutch-operatinglevers and clutch ina dilferent position. Fig. 3 is a view similar to Fig.

similar to Fig. 2, showing the clutch out of gear. Fig. 5 is averticalsectional view of the pipe-forming plunger and cylinder, showingthe plunger at the point of cutting off communicationbetween theforming-cylinder and the feed-cylinder. Fig. 6 is an end elevation ofpart of Fig. 5, showing the stop-gates at the end of theforming-cylinder closed.

Fig. 7 is a similar view showing the gates open.

Like symbols of reference indicate like parts in each.

In the drawings, 2 represents the formingcylinder of the machine, havinga longitudinally-movable plunger 3 provided with a rod or mandrel 4,which extends axially through the cylinder and is of smaller diameterthan in unison.

gagement with one of the pulleysor the other the screw-shaft is rotatedto the right or to the left, accordingly as one pulley or the otheroperates asthe driving-pulley. To move this clutch I employ a weightedlever 10, pivoted at 11 and connected with the clutch by a fork, asshown. The automatic mechanism for actuating this lever will beexplained hereinafter. Atthe end of the cylinder 2 are gates 12, pivotedon axes 13, which are connected by spur-wheels 14, so that the gatesshall move 7 As shown in Fig. 6, they are adapted to be closed aroundthe core 4, so as to close the end of the cylinder.

V 15 are springs which tend to throw the gates open into the positionshown in Fig. 7.

16 are knife-edged blades, the ends of which are of circular are, so asto form part of the circular opening of the closed gates. These bladesare longitudinally. movable on the gates and are provided with springs17, which tend to force them toward each other. The ends of the gateshave lugs 18, and when they are closed they are adapted to be held bymeans of a forked lock 19, Figs. 1 and 3, in;-

closing the lugs 18.- This lock is adapted'to be released automatically,as hereinafter e plained.

For the purpose of feeding the paper-pulp:

to the cylinder 2 I employ an upright feedcylinder 20, communicatingwith the cylinder 2, as shown in Fig. 5, and having a plunger 21, thelower end of which is concavely curved on the arc of the plunger 3. Ifdesired,means gravity. The cylinder 20 is connected with a feed-hopper22 by a connecting-pipe 23. The hopper is kept filled with paper-pulp,which enters the cylinder 20 through the connecting-pipe, as hereinafterexplained. To operate the plunger 21, I may employ a toothed rack-bar24., having a guiding cross-head 25 and driven by a pinion 26 on a shaft27. On this shaft are two loose pulleys 28 and 29, which are driven inopposite directions, as indicated by the arrows. Between them is a 5other than the plunger 21 maybe used to feed the pulp, or it may be fedby direct action of clutch 30, constructed and arranged like the clutch9, above described, and adapted to be moved by a lever 31, pivoted at32, into con tact with either of the pulleys, so as to rotate the shaftin either direction. 'To operate the clutch automatically I connect itby a link 33 to a bell-crank lever 34, which, by a rod 35, is connectedwith a lever 36, pivoted at 37, and connected by a rod 38 to a lever 39,pivoted at 40. Thelevers 36 and 39 are preferably provided with rollers41 at their lower ends, which rollers are so situated as to be engagedby a roller 42 on an arm 43, which projects from the cross-head 6. Theclutch-lever 10 is connected with a rod 44, which moves longitudinallyin guides 45. and is provided with projections 46 and 47, adapted to beengaged by the arm 43 at the ends of the stroke of the cross-head.

48 is a stop on the cross-head 25, which is adapted, at the upper end ofthe stroke of the plunger 21, to engage aprojection 49 on a rod 50,connected with the bell-crank lever 37.

Suppose the parts to be in the position shown in Fig. 3. Then theplunger 3 has reached the end of its outstroke and has completed theformation of a pipe and has ejected it from the cylinder, ashereinafter. described, the feed-plunger 21 being on its upstroke. Atthe end of the outstroke of the plunger 3 the arm 43 of the cross head 6engages the projection 46 on the rod 44 and draws the clutch-lever 1Oforward, thereby moving'the clutch 9 out of gear with thepulley 7 andinto gear with the pulley 8, thus reversing the rotation of thescrew-shaft 5. Thereupon the cross-head 6 begins to move back. When thecross-head 25 reaches the end of its upstroke, Fig.4, the projection 48engages the arm 49, thereby turning the lever 34 and the lever 31 andmoving the clutch 30 out of engagement with the pulley 28 and stoppingthe upward motion of the plunger 21. This plunger has then moved abovethe end of thefeed-pipe '23, and a charge of pulp enters thefeed-cylinder from said pipe, the pulp being mixed with water and insufficiently fluid condition to flow easily into said cylinder. As theplunger 3 continues its back-stroke the roller 42 passes under theroller 41 of the lever 36 without engagement therewith; but farther inits back-stroke it engages the roller of the lever 39, thereby movingthis lever, and by means of the rod 48, lever 36, and bell-crank 34moving the lever 31 and bringing the clutch 30 into engagement with thepulley 29. This pulley then drives the shaft 27 in the proper directionto cause the rack 24 to move the plunger 21 downwardly, Fig. 2. Theaction of this plunger in the cylin- (ler 20 forces the pulp containedtherein into Figs. 1 and 5, the plunger 21 has also reachedfeed-plunger.

the end of its downstroke. At that moment the roller 42 has engaged theroller on the arm 36, Fig. 1, and by moving said arm has shifted theclutch 30 into contact with the pulley 28, the effect of which is toelevate the As the plunger 3 advances farther it compresses thoroughlythe pulp in the cylinder against the closed gates 12 and ejects thewater expelled by pressure from the pulp through the crevices at saidgates. \Vhen the plunger has advanced far enough to complete suchcompression and to form the pipe, the end of a rod 51, which projectsfrom the cross-head 6, engages a lever 52, which is connected by a 'link53 with the latch 19, thereby moving the lever from the position shownin Fig. 1 to that shown in Fig. 3 and retracting the latch so as to freethe gates 12, which thereupon spring open into the position shown inFig. 7. Then as the plunger 3 continues to advance it ejects the pulppipe from the cylinder. When the forming-plunger reaches the extremelimit of its outstroke, the operator of -the machine brings together thegates 12, so as to cause the spring knifeblades 16 to fit around thecore 4at the front end of the plunger. Then as the screw-shaft isreversed, as above described, these knifeedges hold the pulp tube andcause the core to strip itself from within the same. When the core hasreceded, the tube drops into a suitable receiver.

The machine, as described above, is con tinuous and to a great extent isautomatic in its action. The operations of feeding and compressing thepulp are continuous. The machine is therefor capable of large output andis adapted to make pipesof excellent quality. a

Without limiting myself to the precise con struction and arrangement ofthe parts, which may be modified in various ways, I claim- 1. In amachinefor making paper pipes, the combination of a forming-cylinderhaving a plunger and an axial core, means for moving IIO the plunger, agate adapted to fit around the combination of a forming-cylinder havinga plunger and an axial core, a gate adapted to fit around the core, afeed-cylinder entering the forming-cylinder, a plunger operating withinthe feed-cylinder, and means for moving the plungers, substantially asand for the purposes described.

3. In a machine for making paper pipes, the combination of aforming-cylinder having a plunger and an axial core, a gate adapted tofit around the core, a feed-cylinder entering the forming cylinder, aplunger operating within the feed-cylinder, means for moving theplungers, and reversing mechanism operated by motion of the plungers toreverse the same periodically, substantially as and for the purposesdescribed.

4. In a machine for making paper pipes, the combination of theforming-cylinder, a plunger having an axial core, means for moving theplunger, and movable gates adapted to fit around the core and to closethe end of the cylinder, substantially as and for the purposesdescribed.

5. In a machine for making paper pipes, the combination of theforming-cylinder, a plunger having an axial core, means for movingcylinder, and spring-blades carried by said gates, substantially as andfor the purposes described.

7. In a machine for making paper pipes, the combination of aforming-cylinder having a plunger-and an axial core, a stop adapted tofit around the core, a feed-cylinder entering the forming-cylinder, aplunger operating .within the feed-cylinder, driving mechanism foractuating said plungers, clutches for re versing the action of saiddriving mechanism, and levers operated by motion of one of the plungersand connected with said clutches to operate the same, substantially asand for the purposes described.

In testimony whereof I have hereunto set my hand this 26th day ofFebruary, A. D. 1891.

JAMES PETERS.

\Vitnesses:

W. B. CoRWIN, II. M. CORWIN."

